SC's Property Tax Rate Depends on a Form You Have to File Yourself

South Carolina assesses a primary, owner-occupied residence at 4% of value. Everything else — a second home, an investment property, a home you haven't formally claimed — gets assessed at 6%. That's a 50% higher tax bill for what can otherwise be an identical house, and the lower rate is never applied automatically.

New buyers default to the 6% rate until they file for legal residence status with the county assessor. That's true even for someone who fully intends to live in the home year-round — the county has no way to know that until you tell it, in writing, on the correct form. Skip the paperwork, and you're paying a third more in property tax than a neighbor in an identical house who filed on time.

This isn't a hidden fee or a gotcha specific to out-of-state buyers — it's simply how South Carolina's property tax system is structured, and it applies to every South Carolina homeowner, not just relocating retirees. The reason it catches so many buyers off guard is that most other states apply their primary-residence tax advantage automatically or bundle it into the closing process. South Carolina requires an active, separate application.

Get both filings right, and South Carolina's property tax becomes genuinely one of the lowest lines in a Midlands retirement budget — Richland and Lexington counties already carry effective rates among the lowest in the country before either benefit is applied. Miss either one, and the same home costs meaningfully more every single year, indefinitely, for no reason other than a missed form.